Cyanid-cylinder.



H. B. MEADE.. GYANID CYLINDER.

APPLIGATION FILED SEPT.14,1911.

Lw@ 1.73m mmm swt. m m2.

. 62a @f8 y l Il 'Il Y citizen of the United States,

UNTTED sTATEs PATENT oEEIoE.

HENRY B. MEADE, 0F LOS ANGELES, CALIFORNIA, ASSIGN'OR OF WILLIAM F. SHEDD, 0F LOS ANGELES, CALIFORNIA.

onu-HALF To A cYANIncYLINDEn.

To all whom it may concern:

Be it known that I, HENRY B. MEADE, aresiding at Los Angeles, in the county of Los Angeles and State of California, have invented a new and useful Cyanid-Cylinder, of which the following is a specification.

This invention relates to apparatus for 'treating gold, silver, copper, nickel and other ores by chemical processes, whereby the metals are dissolved in a cyanid, chlorid, bromid, ammoniacal or other solutions .or gases. Heretofore, an open t-ank apparatus has been utilized for carrying on this procf tightly closed',

ess, which occasioned a heavy .loss of the solutions and gases by evaporation and escaping to the atmosphere and' imperfect oxi- .dation of the pulp; while in inclosed barrel manipulation it has been ditlicult to keep up a continuous injection of air, gas or solution while in motion. This has greatly increased the cost of lixiviation and a great amount of time has been consumed, which has been a disadvantage in many ways.

It is the object of my invention to provide an apparatus which overcomes all of the above named difficulties and, in addition, has other advantages, including rapidity of the manipulation and eliiciency of lixiviat-ion.

The invention consists of an inclosed and revoluble cylinder in which the ore may be placed. This cylinder is equipped for being after the materials have been introduced, and with means for forcing air, oxygen, other gases or solutions into the cylinder under pressure while in motion or at rest; thus makin a continuous aeration nascent process whi e in agitation, so that the metals are quickly dissolved in the solution or gas. When solution is effected, the cyhnder is brought to rest in such a position that an interior perforated diaphragm, or filter floor, is at the bottom of the barrel. The pressure `above the dia hragm' is increased, which forces the liqui downward through the lter or diaphragmand out of the cylinder at its lowermost portion. Means are provided to quickly discharge the cylinder after the operation is completed.

In the accompanying drawings: Figure 1 is an end elevation of my improved machine. Fig. 2 is a sectional elevation on line 2-2 of Fig. 1 of my improved machine. Fig. 3 is a cross-section of the cylinder taken Specication of Letters Patent., I Application led September 14, 191,1.

y ore.

Serial No. 649,390.

on line 3-3 of Fig. 2,.,showing my convex diaphragm. Fig. i is a' detailed section of my special rotating, non-leakin pressure valve for introducing gas or liquid into the cylinder while in motion or at rest. l In the drawings 1 and 3 designate pillarblocks, preferably of cement. These pillars (four in number) are supplied with journal bearings 8 and 9 of any approved design bolted to the top of each. Shafts 6 and 7 'revolve in bearings 8 and 9 and are provided with grooved rollers 4 and 5, four in number and spaced ata suitable distance from each other. Tracks 22 and 23, bolted to the outside of the cylinder, rest on rollers 4 and 5 to form anti-friction bearings for t-he cylinder; and the cylinder is revolved on these rollers by gear 21 bolted to the outer shell-of the cylinder, meshed 'in small pinion 10, which is keyed to shaft l1, supported on suitable bearing 2, 12. Shaft 11 may be driven in any 'desired manner to rotate the cylinder at a suitable speed which is preferably low to facilitate agitation. This construction is one of the structural features of my` invention.

In the upper portion of the shell 13 of `the cylinder 1s cut a manhole of suitable size for the insertion and withdrawal of ore. This opening is closed by an ordinary manhole cover 26, secured in position by clamping device and bolt 27. There is also provided a relief cock 28 to relieve pressure when desired to withdraw the manhole cover. Across the bottom of the cylinder is constructed a convex diaphragm 11i, which is perforated with holes 16 and supported by central post 19, which leaves the open space 15 between the diaphragm and lower wall of the cylinder for the displacement and free circulation of the filtered solutions. A filter cloth or matting 18 is stretched over the perforated diaphragm to retain the line particles of sand, overwhich lter cloth or matting is fastened a suitable wire screen 17 to protect the cloth or matting from wear due to the intense scouring of the broken The object of the convex diaphragm is to maintain the strength and rigidity and increase the area of the filter cloth, 1n all positions of the cylinder while in revolution; and the convexity also increases the thickness of the ore masses at the walls of the cylinder. This lconstruction is one of the structural features of my invention.

Patented sept. 1o, 1912.

The cylinder is provided with a central shaft 20, which extends centrally through and past the heads 25 a suitable distance to receive my rotating non-leaking valve (see Fig. 4) for the admission of air, gases or liquid while the cylinder is in motion. A pipe 30 leads from any suitable source of Huid under pressure and is controlled by valve 31. From valve 3l a pipe 32 leads to the bored interior 39 of shaft 20. From the shaft bore--a-.rpipe 40 leads to a check valve 41 which preven-tsback passage of pressure and holds the pressure on pressure' gage 46 for accurate readings. Connection to the gage is made through members 42, 43, 44 and 45. A pipe 4'( leads into the cylinder` through'the head 24 n'ear its periphery and a check valve 48 prevents back passage of pressure. This construction of introducing air, gas or liquids while rotating is a novel feature of my invention. In

the bottomof the cylinder underneath the 4"diaphragm is provided an outlet'valve 29 `to`control the flow of solution, to which a .and'is thus connected with nipple 40.

This is my special invention for the admitting of fluids or gases into a revolving cylinder' or tank.

Having now set forth the object and natureV of my invention, and a construction Iembodying the principles thereof, what I claim as new and useful and desire to secure by Letters Patent is 1. In a cyanid treating mechanism, a revoluble central hollow shaft, a barrel mounted on the shaft, means for feeding fluid under pressure to the end of the hollow shaft, a pipe leading transversely from the shaft and entering the end of the barrel, a pressure gage connected to the pi e, and a check valve on the pipe on each side ofthe gage to prevent passage of pressure from barrel back to the shaft.

2. A cyanid treating mechanism, comprising a revoluble hollow shaft, a barrel mounted on the shaft and adapted to hold the materials to be treated, a. convex filter bottom for the cylinder comprising an upwardly'convex perforate wall and a fabric covering for the wall, and means for continuously injecting fluid under pressure into the barrel while in rotation, comprising means for feeding fluid under preure to the end of the hollow shaft, a pipe leading transversely from the shaft and entering the outer end portion of the barrel, a pressure gage connected t0 the pipe, and check valves on the pipe one on each side of the gage to prevent the backing of pressure from the barrel to the shaft.

3. In a cyanid treating mechanism, a revoluble central hollow shaft, a barrel thereon, means for feeding fluid under pressure to the end of the hollow shaft, a pipe leading from the shaft and discharging into the barrel interior near its periphery, a pressure gage connected to the pipe, and a check valve to prevent passage of pressure from the barrel.

4. In a cyanid treating mechanism, a rev oluble central hollow shaft, a barrel thereon, means for feeding fluid under pressure to the end of the hollow shaft, a pipe leading from the shaft and discharging into the barrel interior near its periphery, and a check valve to prevent passage of .pressure from the barrel.

HENRY B. MEADE.

Witnesses:

NELLIE WHrrMER, JOHN S. MEADE. 

